danimal can help you out with this. He once sent me instructions and a diagram, but I'm not sure where I put the file. It's really quite easy, but there is one trick involved. You have to remove the brake handle cover. It's a bear to pull off, but if you give a QUICK spray of WD40 or even a soapy solution in there, it will wiggle off with some effort. Do the same to replace the handle.

I'm sure he'll see this and respond, but a PM may get to him faster.